OFFSET
0,3
PROG
(PARI) lista(nn) = {my(v=vector(nn+2, i, 1)); for(n=0, nn, v[n+2]=sum(k=1, 1+sqrt(n), v[k]*v[n+2-k])); v; } \\ Jinyuan Wang, Mar 18 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Jinyuan Wang, Mar 18 2020
STATUS
approved